Spare tire lock



March 29, 1932; c, JOHNSON 185L313 SPARE T'IRE LOCK Filed May 2, 1927 2 Sheets-Sheet l ma [012ml .1 Jb/mson Patented Mar. 29, 1932 J T q cervm L. JOHNSON, or tours; MIsso isI, essrelioia, 2e? nest-E ASSIGNMENT S, To.

- DURO' METAL: radiators 'COMPANYQ'OFICHICAGO, ILLINOIS, A eoRro'RATIonor I ILLINOIS Application filed m 2,

This invention relates to an improvedtire lo'ck and more particularly to a lock adapted I invention toprovide a spare tire loch which can be permanently securedto the rim portion of the usualftire'car'rier, and whlch will.

to secure the spare tire and rim to the rack or portion of a spare tire carrieron an automobile body or chassis. Heretofore, (11f ficulty has been experienced in-the' provision quickly and without the useof a key, clamp and lock the sparetire anfdirim rigidly to the tire carrier. f I I Itis a further'important object of this in 'venti'on to providea spare tire lock of the class described which is quickly and conven- I ient-ly adjustableto lockvarious sizes of tires and rims, andfwhic'h holds the tire and rim rigid position on the tire racl ,Itl1ereby ob I Vehicle. I

1 This invention a Preferred form) viafting any rattle during movement of the A further important object of "this invention is the provision'of a, lock which can be quickly, easily andpermanently secured to the tire rack by means of a single screw or bolt,

thereby obviating the necessity of rivetin which is particularly diflicult when the I tire Carrier is mounted on the back ofthe yehicle hodyq I g It It is a further important object of this in- I vention to provide a: lockinto- Which the spare tire and tire rim may be securely locked by the mere rotation ofscrew means, and which I canbeiunlockecl to release the'tire' and' rim by operation of key 'controlle'dmeans. Other and furtherimportant" objects of this u b parent from the discl'o;

sures inthe specificationand the accompanyw u 7 I V I her being curved at ts periphery to forman holld Ipor e: and hav e e s 1 ing drawings.

yice ofthis invention.

' SPARE T'IREZLOCK 11927. Serial No. 188,132.

more fully described. g

0111118 fdrawings I I I Figure l is a fragmentary elevational iew of a-tire mounted onthe usual rim,and hayingfs'ecured thereon the ini illustrated in the drawings, and hereinafter h igure 2fis, an 'enlarged front iew of lock and showing one method of attaching it I totheI tire carrier. I 1

I Figure 3 is across section takenlthrough the device onthel ne 'I II- 'III of Figure 2. u r Figure 4 1s a CIOSSSSClJlOIl taken on the l ine' IVIV of Figure Figure 5 is at cross section taken on-the line.

V%V of Figure 3.

, Figureh is a fragmentaryfelevational iew proved locking Ide-' with parts insection showingamodified form 7 for securing my device,

As shownont he drawings :Iv

The reference numeral 1Oindi catesthe cirof tire=caI=y cular metal rim of theusual type v rier whlchj is securelymounted on-th'e vehicle body or chassis. The rim '10 has its inward edge cast or rolled tofornian' annular flanged edge 11, whichacts as a; stop when," the tire and tire is mounted thereon. Theoppo- I site edge of the rim 10 is upturned at the topor" the carrier to form Ia-"fiange (not shown) and iiSjlSr Well knewn, thespare tire rim-, at thetop of the carrier, is prevented from I forward or rearward movement by these flanged edges, and inorder'to removethe lower portion oft-he tireand rim rearWa-rdly and then lift the "samefrom its resting posicarrier rim l0, and preferahly-at theloIyer- I most part'ofsaidcarrier rim 10. The casing 12 has a downwardly entending arm or jaw I spare tire and rim,'it isjnecessary to pull the 7 member 13 integraltherewith,isaid arm meni;

formed therein to fit over the flange of a spare tire rim. A bushing member 17 has a relatively long annular flange 19 adapted to fit in and slide within the hollow passage 20 in the open end of the casing 12. As shown in Figure 4, upper and lower recesses 21 and 21a are formed in the periphery of the flange 19 and are adapted to engage over the short upper and lower integral keys 22 and 22a, thereby locking the bushing member 17 against rotation when it is in its innermost or locking position. The apertured clamping member 17 has a downwardly extending member 23 integral therewith, said member 23 having its edges turned inwardly to form a hollow portion 24. Recesses 25 are formed in the curved periphery on each side of said member 23 for reception of the flange of the spare tire rim.

A threaded bolt 26 passes through the aperture of the bushing member 17 and through the passage 20 of the casing 12, and its thread ed end 27 threadingly engages a reduced portion 28 of the housing 12. A blank head or nut'29 having an annular flange EEO-integral therewith is mounted on the forward end of said bolt and is secured thereon by a short pin 31 which passes laterally through said ead and sets in an aperture in" the bolt 26. The head 29 provides a means for turning the bolt 26 to permit movement of the clamping member 17 inwardly and outwardly relative to the casing 12. The threaded end 27 of the bolt 26 is preferably riveted to prevent entireremoval of said bolt from the housing 12. The bolt 26 has an enlarged portion or collar 32 which is provided with two flat surfaces 33 and 34 diametrically opposite each other,-each of said flat surfaces 33 and 34 having oppositely directed shoulders 33a and 34a for a purpose which will later appear. An auxiliary casing or housing 35 is formed above and integral with the main casing 12 to house the lock cylinder 36, said lock cylinder 36 being rotated by insertion of a suitable key. The lock cylinder 36 has at its inner end an eccentric plug 37, said plug 37 being in turn provided with an eccentric projection 38.

A vertical recess 39 in the auxiliary housing 35 and connecting with the inside of the housing 12, has slidably mounted therein a bolt 40 which is normally pressed clownwardly by a helical spring 41 in the recess 39. The vertical recess 39 may be formed by drilling from the top of the auxiliary housing 35 and then welding to close the aperture in the top of said auxiliary housing. The eccentric projection 38 on the plug 37 projects into a recess 42 formed in the upper end of the slidable bolt 40. When the lock cylinder is rotated to locking position, the eccentric projection 38 will be moved into its lowermost position, and the bolt 40 will be moved down-.

wardlv by the action of the spring 41, and

theen d of the bolt 40 will be in engagement with the collar 32, thereby locking the bolt 26 against rotation. When the bolt 26 is rotated so that either of the flat portions 33 and 34 are on top, the lower end of the bolt 40 will engage with the said flat portions and the shoulders 33a and 34a, thereby locking the bolt 26 against counter-clockwise rotation. It will be noted, however, that the two diametrically opposite edges (one on each groove) are beveled, so that when the bolt 26 is rotated in clockwise direction, the bolt 40 will be moved upwardly against the action of the spring 41, thereby permitting clockwise rotation of the bolt 26 when it is desired to clamp the spare tire and rim in my device. The engagement of the shoulders 33a and 34a will prevent counterclockwise rotation of the bolt 26. It will also be noted that the recess 42 in the bolt 40 is a long groove or recess, this being for the purpose of permitting free upward movement of the bolt 40 irrespective of the position of the eccentric projection 38 on the plug of the lock cylinder 36. The advantage of the above-mentioned construction will be apparent in that it will permit clockwise rotation of the bolt 26 and resultant drawing together of the clamping member 17 and member 13, without the necessity of in sertion of the key and rotation of the look cylinder. The clamping member 17 cannot be released by counter-clockwise rotation of the bolt 26 due to the engagement of the shoulders 33a and 34a with the bolt 40.

A pin 31 is preferably used to secure the flanged nut 29 to the bolt 26 for the reason that a forced rotation of said bolt 26, when the device is locked, would shear the pin 31, thereafter leaving the device still locked against the attempts of a thief.

Figure 6 showsa slightly modified form of my device which provides a quick and easy method of securing the device to a spare tire carrier when the device is intended for accessory rather than standard equipmentuse. The base of the casing 12 is formed with a hooked flange 43 which is adapted to hook over the edge of the rim 11 of the spare tire carrier. A hole is drilled and threaded in the clamping member 13 of the casing 12 at a point substantially opposite the edge of the curved annular flange ll of the tire carrier rim 10. A short screw 44 having a cone shaped end 45 is screwed in said threaded aperture so that the upper portion of the cone shaped end 4510f the screw 44 engages the edge of the curved annular flange 11 of the rim' 10, the apex of said end 45 being below the edge of said flange 11 and securing the locking device rigidly to the tire carrier rim. The head of the screw 44 is preferably cutor ground off flush with the outer surface of the clamping member 13 to prevent unauthorized removal of the device from the rim of the tire carrier.

ing the tire rim and t The operation is as follows:

To look a spare tire and rim with my device, it is first necessary to turn the nut 29. and thereby put the bolt 26 in its outermost position, thereby permitting the clamping member to be moved outwardly to cause disengagement of the keys 22 and 22a, and per-,. mitting rotation of the clamping member 17 so that the member 23 will point upwardly. The rim and tirethereon is then set between the usual hooks or flanges at the top of the tire rack and the lower part of the tire and rim is pressed into its usual mounted posi-- tion around the rim 10 of the carrier far enough so that the flange of the spare tire rim would engage in the hollow portion 14 and'reces'ses 16 of the clamping member 13 of the casing 10. The clamping member 17 is then rotated to point downwardly, andthe bolt 26 is rotated in clockwise direction todraw the clamping member 17 toward the clamping member 13, thereby securely clamp,- ire thereon on thespare tire rack. c

To release the tire rim and tire, it is necessary to insert the key and rotate the lock cylinder until the eccentric projection 38 raises the bolt 40 to its upward position and then the bolt 26 is rotated and the clamping member pulled outwardly and turned upwardly; to permit removal of the spare tire and rim.'

I am aware that manychanges'maybe made, and numerousdetails of construction may be varied through a wide ran e without departing from the principles of t isinven tion, and I therefore do not purpose limiting the patent granted hereon, otherwise than necessitated by the prior art. I

I claim as my invention:

1. In combination, a first clamping member, a second clamping member, one of said members being movable angularly relative to the other member when said former member is in an unlocked position, means for preventing relative angular movement of said members when they are 1n a locked position including telescoping parts associated with said clamping members, means for enabling, said members to be held in cooperation with each other, and a lock for-locking said members incooperation and against separation.

2.'In comblnation 1n atlrelock, a palr of cooperable clamping 'members, including means torengaging the rim of a tire, one of a said members being movable angularlyrelative to the other member when said former member is in an unlocked position, said meme hers I including telescoping parts adapted when said members are in cooperation andin a locked position to prevent relative angular movement, means for drawing said members toward each other and formaintainingsaid telescoping parts in cooperation, and a lock for locking said drawing means against opierat q gerh reby aid me b may bQEQfiQQti QW-slQQkQ in th rim :0? the v :3 In combination ire-109k, a Peiwf .eoepe abl ada p g mem ers iinel d g mean -:a an ed ease the r m o .r i

:means fer pr via nsir lat r i neula imev ment f aid hersfinsl di s=pa t e n tedtoaid mberse apt d torb a rw u h .int. es opicseat-inn whe s i be s re dra t t-Ward ea h; -Qth r,.- 1i i drawing saldmemh s towar e c u ling a 1b01it eXte dina hr u a m b rs, 3.93 c ampi ee mb b ng-rota b y mounted on the bolt and the other member be ngc an e di he et and ai oek adapt to ksaid' b lt aga ns cremat on; w n sa d em ersare n m perativ relation.

4. In combination in a tire look, a pair of cooperable clamping members including means adapted to engage the rim of a tlre,

means for preventing relative angular move ment of said members including parts connected to said members adapted to be brought into telescopic relation when said members are drawn toward each other, means for drawing said members toward each other in- I eluding a bolt extending-through said members, one clamping member being rotatably mounted on the bolt and the other member v being connected thereto, said bolt having a slotted portiondisposed in one of said clamping members, and a key operated lock including a plunger for engaging said slotted portion of the bolt to hold the bolt against movement.

5. In combination in a tire look, a pair of cooperable clamping members, each of which includes a jaw portion for engaging the edge of a tire rim, means for drawing the mem- 6. In combination in a tire look, a first 3 clamping member, a second clamping memher, said members including means for engaging the mm of a t1re,sa1d clamping meme bers being provided with telescoping parts capable of relative rotation when partially telescoped, means for enabling said clamping members to be held in cooperation witheaoh other, anda lock for locking said clamping members in cooperation-and against separa tion, one of said telescoping parts compris-a ing a lug adapted to extend into a slot in ice the other telescoping part, to prevent relavtive rotation between said telescoping parts, when said parts have been telescoped'beyond a certain degree.

7. In combination in a tire lock, a first clamping member, a second clamping member, said members including means for enaging the rim of a tire, said clamping mem- 5 ers being provided with telescoping parts, a screw for holding said clamping members in cooperation with each other, and a lock carried by one of said clamping members adapted positively to engage said screw to hold said clamping members in cooperation and against separation, one of said telescoping parts comprising a lug adapted to extend into a slot in the other telescoping part to prevent relative rotation between said tele- 5 scoping parts.

In testimony whereof I have hereunto subscribed my name at St. Louis, Missouri.

COLVIN L. JOHNSON. 

